Decolorizing material and method of producing same



W. S. BAYLIS Feb. 17, 1931.

DECOLORIZING MATERIAL AND METHOD OF PRODUCING SAME Filed May 22, 1926Patented Feb. 11, 1931 amrzs UNITED STATES PMATENT OFFICE WALTER B.RAYLIB, OF ANGELES, CALIFORNIA, ASBIGNOR, BY MESNE ASSIGN- MENTS, TOFIL'IROL COMPANY 01' CALIFORNIA, OI L08 ANGRLES, CALIFORNIA, A

CORPORATION 0] CALIFORNIA DECOLORIZING MATERIAL AND METHOD OF PRODUCINGSAME Application filed Kay 22, 1926. Serial no. 110,980.

My invention relates to a decolorizing material which is particularlyadapted for the decolorizing of gasoline and the like, and also relatesto a process of manufacturing such a decolorizing material.

Gasoline is decolorized and purified before it is placed on the marketin order to remove certain of the unsaturated and aromatic hydrocarbons,together with any other impurities of which the gasoline should be rid.

It is an object of this invention to provide a novel and improvedprocess of treating gasoline whereby it is more guickly and morethoroughly decolorized an refined.

I have discovered a decolorizing material which is rapid and thorough indecolorizing gasoline and other substances which have practically nowater content.

It is accordingly one of the objects of this invention to provlde adecolorizing material for treating substances having no water content.

The decolorizing material of my invention consists of a cla havingdecolorizing pro erties and acid w ich are intimately m1xe together. Ifind that it is very important that the clay and the acid besubstantially free from water.

It is a further object of my invention to provide a process of makingthe decolorizing material 0 my invention.

Other objects and the s ecial advantages thereof will be made mani esthereinafter.

In the drawing which illustrates an apparatus adapted for conducting theprocess of my invention by which the decolorizing clay of my inventionis produced, 1- is a dehydrator in the form of a kiln, 2 is a primarypulver-- izer which may be of any standard form, 3 is a mixer, and 4 isa secondary pulverizer which may be of any standard form.

The decolorizing clay is supplied to a rotating cylinder 11 of the kiln1 by means of a conduit 12. The cylinder 11 is rotatably supported byrollers 13 which engage tracks 14 thereof, and is rotated by means of apinion gear 15 which engages a gear 16 of the cylinder 11. The. interiorof the cylinder 11 may be. heated by a fire-box 18. The decolorizingclay is carried from the dehydrator 1 to the dehydrated decolorizingclay thereinto and.

for removing it therefrom.

The decolorizing clay is taken from the primary pulverizer 2 anddelivered to the mixer 3 by means of a chute 30. The mixer 3 consists ofa shell 31 which provides a mix ing chamber 32. Secured to a shaft 33 isa plurality of mixing paddles 34 which are situated in the mixing 0amber 32. The shaft 33 is driven by means of bevel gears 36. Acid, whichis preferably sulphuric acid, is delivered to the mixing chamber 32 bymeans of an acid pipe 37. Extending from the bottom of the shell 31 is aconduit 38 having a valve 39. The conduit 38 delivers a mixture from themixer 3' to the secondary pulverizer 4. The secondary pulverizer 4 has arotatable drum 41 which is supported by bearings 42 through which shafts43 extend, and is driven by a pinion gear 44 which engages a large gear45 of the drum 41'. A door 46 is pro- I vided'inthe drum 41 forintroducing a mixture thereinto and for removing the mixture therefrom,which mixture when removed is deposited in a chute 49 by means of whichit is carried from the secondary pulverizer 4.

The process of producing decolorizing material is substantially asfollows:

The clay used in my invention possesses marked decolorizing propertiesbut it is impossible at this time to accurately define its physicalcharacteristics. The decolorizing clay, as I call it, is delivered bymeans of a conduit 12 to the left end of the cylinder 11 of thedehydrator 1. The cylinder 11 is heated to a temperature of 300 F. orabove, and the decolorizing clay is not only thoroughly dried in thesense that it is free from water, but it is dried to such a degree thatsubstantially all of the water of crystallization is driven therefrom.When the decolorizmg clay passes from the right end of the deh drator 1into the chute 20 it is in a state of tli is removed therefrom. Thedehydrated clay is then delivered to the primary 2 and is introducedinto the interior of the drum 23 thereof, the door 28 being removed forthis purpose. The door 28 is then replaced and the drum 23 is rotated.

In the drawing I have shown the primary pulverizer 2 and the secondarypulverizer 4 as being ordinaryv tubemill pulverizers but it should beunderstood that other types may be used. Also the dehydrator is shown inthe 7 form of a. kiln but another type of dehydrator;

1 might be used in lieu thereof.

After the dehydrated decolorizing clay has been thoroughly pulverized,the door 28 is opened and it is delivered into the chute 30, by means ofwhich it is conducted to the mixing chamber 32.

In the mixing chamber 32 the decolorizing clay is very intimately mixedwith an acid which is substantially free from water, by the action ofthe mixing paddles 34 which are rotated with the shaft I prefer to usesulphuric acid in my,decol0rizing material but some other acid might beused if desired.

I find it desirable to mix from 4 to 8 per cent sulphuric acid by weightwith the decolorizing clay. The sulphuric acid, since it issubstantially free from water and since the decolorizing clay issubstantially free from water, has practically no reaction upon thedecolorizing clay. Therefore, a mechanical 35 mixture of free sulphuricacid and decolorizing clay is obtained.

After the decolorizing clay and sulphuric acid have been intimatelymixed in the mixer 3, the valve 39 in the conduit 38 is opened and themixture is delivered to the secondary pulverizer 4. The door 46 of thedrum 41 is opened so that the mixture may be introduced thereinto, afterwhich the door 46 is replaced and the drum 41 is set into motion. Afterthe mixture is again thoroughly pulverized, it is ready for market andistaken from the secondary pulverizer 4 by means of the chute 49.

The decolorizing material produced by my invention is adapte for use intreating substances having no water content and is especially adaptedfor treating gasoline. In the treatment of gasoline by the decolorizingmaterial of my invention, the gasoline to be treated is thoroughly mixedwith an amount of decolorizing material in a mixer which is similar tothe one shown in Fig. 3. It is very often desirable to heat the gasolinewhile it is being mixed with the decolorizing material. The decolorizingmaterial effectively removes all of the impurities from the gasoline,these impurities being adsorbed thereby. After a thorough mixture hasbeen effected, the decolorizing material is sepa- 65 rated from thegasoline, preferably by a orough dehydration and all of the waterpulverizer clay to a temperature above 300 filtering process, leaving agasoline product whirlxh is very highly refined and ready for mar (et.

One. of the important features of this invention resides in thedecolorizing material and its method of production, which decolorizingmaterial is substantially free from water. Because of this, no reactionwill take place between the decolorizing clay and the sulphuric acid andtherefore neither of these constituents will in any way be weakened bytheir intimate association. The decolorizing clay and the sulphuric acidare finely divided due to the pulverization thereof, and are broughtinto intimate contact with the gasoline, thereby effecting a moreeflicient action and a more rapid treatment thereof.

I claim as my invention:

L A decolorizing material consisting of: decolorizing clay having nowater content either in the form of free or divided water ofcrystallization; and sulphuric acid having no water content, saidsulphuric acid being intimately mixed with said decolorizing clay.

2. A decolorizing material consisting of: decolorizing "clay having nowater content either in the form of free or divided water ofcrystallization; and four to eight per cent by weight of sulphuric acidhaving no water content, said sulphuric acid being intimately mixed withsaid decolorizing clay.

3. A process of making decolorizing material comprising: dehydratingdecolorizing clay so that all free water and water of crys-- tallizationis removed; an intimately mixing sulphuric acid having no water contentwith said decolorizing clay. l

4. A process of making decolorizing. material comprising: dehydratingdecolorizing clay so that all free water and Water of crystallization isremoved; pulverizing said decolorizing clay; and'intimate'ly mixingsulphuric acid having no Water content with said decolorizing clay.

5. A process for making ad'ecolorizing ma- 1 terial comprising /heatingadecolorizingclay to a dehydrating temperature so that all free waterand water crystallization is removed; and intimately mixing from four toeight per cent of sulphuric acid having no 1 Water content therewith. v6. A process for making a decolorizingmaterial comprising: heating adecolorizing F. so that all free water and water of crystallization 1 isremoved; and intimately mixing from four to eight per cent of sulphuricacid having no water content therewith.

In testimony whereof, I have hereunto set my hand at Los Angeles,California, this 1 17th day of May, 1926.

WALTER S. BAYLIS.

